Sri Lanka household income and expenditure survey 2012/13
Department of Census and Statistics conducts Household Income and Expenditure Survey (HIES) once in every five years. This survey provides information on Household Income and Expenditure to measure the levels and changes in living conditions of the people. Data collected from this survey is used to observe the consumption patterns to compute various other socioeconomic indicators such a poverty price indices etc. Generally the survey is conducted over a period of 12 months time to capture seasonal variations. The general sample size is 2500 housing units to facilitate the information be given up to district level.